to Jabir, ?O Jabir, a boy will be born to my son al-Husayn who shall be called 'Ali and when Judgment Day comes, a caller will announce, 'Let the master of worshippers rise' and 'Ali b. al-Husayn will rise, and then from 'Ali a son will be born by the name of Muhammad. ?O Jabir, when you see him, Imam Ja'far b. Muhammad al-Sadiq (AS) convey my greetings to him and know that your lifespan after seeing him will be short.'